Telegram, M. Halpern->A.P. Ershov, 20.02.1974
Letter, P. R. King->o the members of IFIP WG 2.1, 24.01.1974
Letter (hand-written), S. Kh. Buchvarov->A.P. Ershov, 17.02.1974
Covering letter, Tony Hoare->A.P. Ershov..., 23.12.1974(?)
Letter, Sh. F. Prutch->To the members of IFIP TC2, 12.02.1974
Information, 07.03.1974
Letter, S. A. Schuman->o the members of IFIP WG 2.1, 15.02.1974
Letter, A. Huber->A.P. Ershov, 20.02.1974
Card, 11.03.1974With Compliments.
Telegram, I. Millqvist->A.P. Ershov, 07.03.1974
ACM Membership Card, 12.03.1974
Card, 13.03.1974With Compliments.
Letter, Tony Hoare->A.P. Ershov..., 18.02.1974
Letter, M. Bazevicz->A.P. Ershov, 16.12.1974
Letter, J. T. Schwartz->A.P. Ershov, 27.02.1974on the possibility of V.Kotov's work in New York; account of the works on SETL and other projects
Covering letter, H. F. Sherwood->A.P. Ershov, 05.03.1974
Letter, M. Miyakawa->A.P. Ershov, 07.03.1974Request to sent official confirmation of the readiness to take the author as a visiting researcer, since it will be of great help in passing the selection examination
Letter, U. Szell->A.P. Ershov, 04.03.1974
Letter, J. B. Dennis->A.P. Ershov, 12.03.1974
Letter (hand-written), J. Kaubisch->A.P. Ershov, 09.03.1974
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